dc4e85bd79
Close https://github.com/llvm/llvm-project/issues/62707 As we discussed before, we'll forbid the use of implicit generated path for C++20 modules. And as I mentioned in https://github.com/llvm/llvm-project/issues/62707, we've emitted a warning for clang17 and we'll make it a hard error in clang18. And the patch addresses the decision.
42 lines
933 B
C++
42 lines
933 B
C++
// Tests that the declaration won't get emitted after being merged.
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//
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// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: split-file %s %t
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//
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/A.cppm -emit-module-interface -o %t/A.pcm
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/B.cppm -emit-module-interface -o %t/B.pcm \
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// RUN: -fprebuilt-module-path=%t
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/B.pcm -S -emit-llvm -o - \
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// RUN: -fprebuilt-module-path=%t | FileCheck %t/B.cppm
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//--- foo.h
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template <class T>
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class foo {
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public:
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T value;
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T GetValue() { return value; }
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};
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template class foo<int>;
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//--- A.cppm
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module;
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#include "foo.h"
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export module A;
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export using ::foo;
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//--- B.cppm
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module;
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#include "foo.h"
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export module B;
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import A;
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export using ::foo;
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export int B() {
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foo<int> f;
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return f.GetValue();
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}
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// CHECK-NOT: define{{.*}}@_ZN3fooIiE8GetValueEv
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